Indian Patents. 213946:A PROCESS FOR PRODUCING PAPER GRADE PULP FROM COIR BIT FIBRES

Title of Invention	A PROCESS FOR PRODUCING PAPER GRADE PULP FROM COIR BIT FIBRES
Abstract	This invention relates to a process for producing paper grade pulp from coir bit waste which comprises in subjecting coir bit waste in the form of fibres to the step of digestion in the presence of white rot fungus and a nutrient urea,wherein step of cooking is avoided.

Full Text	FIELD OF INVENTION This invention relates to a process for producing paper grade pulp from coir bit fibers. BACKGROUND OF INVENTION During pulping, cellulose fibers must be 1iberated from their encasing 1ignin matrix so that they associate with one another, yielding strength in the final product. This polymer separation can be accomplished by removal of 1ignin as in pulps, or by maintaining the Lignin as in high yield mechanical pulps. During the bleaching process, natural colouring materials are removed cling with a part of ting in brightening of the pulp- Paper grade pulp was hitherto produced from wood chips - A disadvantage with the known process was that of shortage of wood chips. Yet another disadvantage is that of the high costs of wood chips which substantially contributed to the end cost of pulp. Yet another that the wood chips were converted into wood shavings and then subjected to the step of cooking so as to cause an exposure of the - The cooked chips were then to the step of digestion to produce pulp• During the processing of coir materials, the coir bit generated in huge having 1 length between 1 /4" to 1 /2' do not find use in the coir processing units and ^r& thus regarded as waste. Furthermore, it is considered that only 257-of coir is used in product application, the remainder constituting a waste - Sti11 when the is extracted from the husk during the step of mechanical tend to break , and a 1 so thereby constituting a waste - As described wastes consisting of coir except as a fuel • OBJECTS OF THIS INVENTION An object of this invention is to propose a process for producing paper grade pulp from coir bit fibers. propose a process for producing paper grade pulp from coir bit wastes but which has a quality as good as that prepared from wood chips. Stil1 another object of this invention is to propose a process for producing paper grade pulp from coir bit wastes which avoids the step of cooking as k n own t to wood c h Yet another object of this invention is to propose a process for producing paper grade pulp from coir bit wastes and whereby substantial quantities of coir bit waste can be employed. DESCRIPTION OF THE INVENTION According to this invention there is provided a process for producing paper grade pulp from coir bit waste which comprises in subjecting coir bit waste in the form of fibers to the step of digestion in the presence of white rot fungus and a nutrient such as urea. In accordance with this invention the step of digestion is carried out in the presence of white rot fungus comprising used singularly or in combination. The ratio of fungus culture to coir is 1 to 5 kg of culture to every 1 metric ton of coir. The digestion is carried out for a period of 7 to 35 days, further, 3 to 6 kg of urea is present to every metric of coir. The digestion is carried out at a temperature of 25 to 37°C. WE CLAIM 1. A process for producing paper grade pulp from coir bit waste which comprises in subjecting coir bit waste in the form of fibbers to the step of digestion in the presence of white rot fungus and a nutrient such as urea. 2. A process as claimed in claim 1 wherein the step of digestion is carried out in the presence of white rot fungus comprising Pluribus soar or Phanerochaete chrysosporium used singularly or in combination. 3. A process as claimed in claim 1 wherein the ratio of fungus culture to coir is 1 to 5 kg of culture to every 1 metric ton of coir. 4. A process as claimed in claim 1 wherein the digestion is carried out for a period of 7 to 35 days. 5. A process as claimed in claim 1 wherein 3 to 6 kg of urea is present to every metric of coir. 6. A process for producing paper grade pulp from coir bit waste substantially as herein described.

Full Text

FIELD OF INVENTION
This invention relates to a process for producing paper grade pulp from coir bit fibers.
BACKGROUND OF INVENTION
During pulping, cellulose fibers must be
1iberated from their encasing 1ignin matrix so that they associate with one another, yielding strength in the
final product. This polymer separation can be accomplished by removal of 1ignin as in pulps,
or by maintaining the Lignin as in high yield mechanical pulps. During the bleaching process, natural colouring
materials are removed cling with a part of ting in brightening of the pulp-
Paper grade pulp was hitherto produced from wood chips - A disadvantage with the known
process was that of shortage of wood chips. Yet another disadvantage is that of the high costs of wood chips
which substantially contributed to the end cost of pulp. Yet another that the wood chips were
converted into wood shavings and then subjected to the step of cooking so as to cause an exposure of the
- The cooked chips were then to the step of digestion to produce pulp•

During the processing of coir materials, the coir bit generated in huge having 1 length between 1 /4" to 1 /2' do not find use in the coir processing units and ^r& thus regarded as waste. Furthermore, it is considered that only 257-of coir is used in product application, the remainder constituting a waste - Sti11 when the is extracted from the husk during the step of mechanical tend to break , and a 1 so thereby constituting a waste -
As described wastes consisting of coir except as a fuel •
OBJECTS OF THIS INVENTION
An object of this invention is to propose a process for producing paper grade pulp from coir bit fibers.
propose a process for producing paper grade pulp from coir bit wastes but which has a quality as good as that prepared from wood chips.
Stil1 another object of this invention is to propose a process for producing paper grade pulp from coir bit wastes which avoids the step of cooking as k n own t to wood c h

Yet another object of this invention is to propose a process for producing paper grade pulp from coir bit wastes and whereby substantial quantities of coir bit waste can be employed.
DESCRIPTION OF THE INVENTION
According to this invention there is provided a process for producing paper grade pulp from coir bit waste which comprises in subjecting coir bit waste in the form of fibers to the step of digestion in the presence of white rot fungus and a nutrient such as urea.
In accordance with this invention the step of digestion is carried out in the presence of white rot fungus comprising used singularly or in combination.
The ratio of fungus culture to coir is 1 to 5 kg of culture to every 1 metric ton of coir.
The digestion is carried out for a period of 7 to 35 days, further, 3 to 6 kg of urea is present to every metric of coir. The digestion is carried out at a temperature of 25 to 37°C.

WE CLAIM
1. A process for producing paper grade pulp from coir bit waste
which comprises in subjecting coir bit waste in the form of
fibbers to the step of digestion in the presence of white rot
fungus and a nutrient such as urea.
2. A process as claimed in claim 1 wherein the step of digestion
is carried out in the presence of white rot fungus comprising
Pluribus soar or Phanerochaete chrysosporium used
singularly or in combination.
3. A process as claimed in claim 1 wherein the ratio of fungus
culture to coir is 1 to 5 kg of culture to every 1 metric ton of
coir.
4. A process as claimed in claim 1 wherein the digestion is
carried out for a period of 7 to 35 days.
5. A process as claimed in claim 1 wherein 3 to 6 kg of urea is
present to every metric of coir.
6. A process for producing paper grade pulp from coir bit waste
substantially as herein described.

Documents:

066-mas-1999-abstract.pdf

066-mas-1999-claims filed.pdf

066-mas-1999-claims granted.pdf

066-mas-1999-correspondnece-others.pdf

066-mas-1999-correspondnece-po.pdf

066-mas-1999-description(complete)filed.pdf

066-mas-1999-description(complete)granted.pdf

066-mas-1999-form 1.pdf

066-mas-1999-form 26.pdf

066-mas-1999-other documents.pdf

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Patent Number

213946

Indian Patent Application Number

66/MAS/1999

PG Journal Number

13/2008

Publication Date

31-Mar-2008

Grant Date

23-Jan-2008

Date of Filing

19-Jan-1999

Name of Patentee

UMA SHANKAR SHARMA

Applicant Address

OF CENTRAL COIR RESEARCH INSTITUTE (COIR BOARD) P.O. KALAVOOR DIST. ALLEPPEY, PIN 588 522,

Inventors:

#	Inventor's Name	Inventor's Address
1	UMA SHANKAR SHARMA	INDIAN NATIONALS OF CENTRAL COIR RESEARCH INSTITUTE (COIR BOARD) P.O. KALAVOOR DIST. ALLEPPEY, PIN 588 522,
2	ANITHA DAS RAVINDRANATH	INDIAN NATIONALS OF CENTRAL COIR RESEARCH INSTITUTE (COIR BOARD) P.O. KALAVOOR DIST. ALLEPPEY, PIN 588 522,
3	SUNIL DATH	INDIAN NATIONALS OF CENTRAL COIR RESEARCH INSTITUTE (COIR BOARD) P.O. KALAVOOR DIST. ALLEPPEY, PIN 588 522,

PCT International Classification Number

D 21 H 3/00

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA